Which operating system? Windows? Is it something like this: https://itch.io/post/981372
It's not exactly what you linked, and yeah, it was a Windows-based pc. I was playing the browser version and everything seemed to work perfectly fine other than the Joints and Bones of the creature. Buttons functioned, everything had visuals, it all worked perfectly. The only weird thing was that the Joints and Bones were completely invisible. However, the muscles were perfectly fine.
That's what I get for trying to use a crappy school computer to play cool stuff, I guess. It may just be a problem with the hardware, as every other computer I've used with it works perfectly.